Abdounur, O. J. (2019). Structural mathematical changes in theoretical music in the early renaissance. International Journal of Mathematical, Engineering and Management Sciences, ( 1), 191-198. Recuperado de https://www.ijmems.in/assets/17-ijmems-18-146-vol.-4%2c-no.-1%2c-191%E2%80%93198%2c-2019.pdf